What is React 19 new hooks summary?

Question

Accepted Answer

**React 19 hooks:**

**use()** — read resources in render:
```tsx
const user = use(userPromise);
const theme = use(ThemeContext);
```

**useActionState()** — form actions:
```tsx
const [state, action, isPending] = useActionState(submit, null);
```

**useOptimistic()** — optimistic updates:
```tsx
const [optimistic, addOptimistic] = useOptimistic(state, updateFn);
```

**useFormStatus()** — form pending state:
```tsx
const { pending } = useFormStatus();
```

**useTransition()** — enhanced:
- Now works with async functions
- Returns pending state

**ref as prop** — no forwardRef needed

**ref cleanup** — automatic cleanup on unmount

React: What is React 19 new hooks summary?